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的对象错误,我为MVC 2.0在一个特定的文本已经为文本框中maximun字符内......但似乎得到了一个未定义的错误,这是我的看法未定义null或在JavaScript
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<%= Html.TextArea("Description", Model.Description, new{id = "descriptionId",onKeyDown = "limitText(this.form.Description,this.form.countdown,1000);",onKeyUp = "limitText(this.form.Description,this.form.countdown,1000);"})%>
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这是我的脚本....
function limitText(limitField, limitCount, limitNum) {
if (limitField.value.length > limitNum) {
limitField.value = limitField.value.substring(0, limitNum);
} else {
limitCount.value = limitNum - limitField.value.length;
alert(limitCount.value);
}
}